Recently, Professor of Physical Therapy Marilyn Moffat was quoted in the article The Best Exercise Ball in the Wirecutter. In the piece, trainers and physical therapists chimed in on the best exercise balls for different body types and physical fitness levels, and how to determine what’s best for you.
Dr. Moffat says: “It is not only your height that is important when determining the correct size of ball needed, but also your leg length. My preference for determining the correct ball size is to sit on the ball with the feet flat on the floor, and your hips and knees should be at 90 degree angles (so that your thighs are parallel to floor).”
“Physical therapists and individuals at fitness centers who are certified in exercise ball techniques are by far the best to provide initial instructions for use of and safety with a ball,” she continues.
To read more, check out the full article.